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Maxim > Products > Analog Switches and Multiplexers 
MAX4914B, MAX4915A, MAX4915B, MAX4917A, MAX4917B
100mA/200mA/300mA Current-Limit Switches with Low Shutdown Reverse Current

Multiple Current-Limit Values (100mA/200mA/300mA) and Low Reverse Leakage Current in Shutdown Mode


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Data Sheet
FULL DATA SHEET (PDF, 188kB)
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Description
The MAX4914B/MAX4915A/B/MAX4917A/B family of switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.2Ω on-resistance and operate from a 2.3V to 5.5V input voltage range. They are available with guaranteed 100mA, 200mA, and 300mA current limits, making them ideal for SDIO and other load switching applications.

When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures that the transient voltages settle down. If after this blanking time the load current is greater than the current limit, the MAX4914B/MAX4915B/MAX4917B latchoff versions enter a latchoff state where the switch is turned off and active-low FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON pin.

The MAX4915A/MAX4917A have an autoretry feature where the switch turns off after the blanking time and then continuously checks to see if the overload condition is present. The switch turns on and remains on after the overload condition disappears and active-low FLAG deasserts.

The MAX4914B is available in the tiny 6-pin µDFN (2mm x 2mm) package, while the MAX4915A/B and MAX4917A/B are available in both 6-pin µDFN (2mm x 2mm) and space-saving 5-pin SOT23 packages. These devices operate over the -40°C to +85°C extended temperature range.

Key Features   Applications/Uses
  • Guaranteed Current Limit: 100mA, 200mA, 300mA
  • Thermal-Shutdown Protection
  • Reverse Current Protection
  • 0.2Ω On-Resistance
  • 14ms Guaranteed Blanking Time
  • Active-Low FLAG Function
  • 80µA Supply Current
  • 8µA Latchoff Current (MAX4914B/MAX4915B/MAX4917B)
  • Autoretry (MAX4915A/MAX4917A)
  • 0.01µA Shutdown Current
  • 2.3V to 5.5V Supply Range
  • Undervoltage Lockout
  • Fast Current-Limit Response Time (5µs)
  • Low (0.1µA typ) Reverse Shutdown Current
  • Tiny 6-Pin µDFN (2mm x 2mm) and 5-Pin SOT23 Packages

 
  		• Cell Phones
  		• GPS Systems
  		• Handheld Devices
  		• Notebook Computers
  		• PDAs and Palmtop Devices
  		• SDIO
  		• USB Ports

    Key Specifications:   Current Limit Switches
    Part Number Current Limit (mA) Functions Max. Load Current (A) RON (typ) (Ω) Switch Op. Voltage Range (V) Fault Indicator Fault Blanking Timeout (ms) RoHS Available Package Operating Temp. Range (°C) Price**
    MAX4914B  100
    •Fault Blanking
    •Latch-Off
    		 0.1 0.2 2.3 to 5.5 Yes 14 Yes MicroDFN/6 -40 to +85 $0.90 @ 1k
    MAX4915A  200
    •Auto Retry
    •Fault Blanking
    		 0.2 MicroDFN/6
    SOT-23/5     		$0.90 @ 1k
    MAX4915B  200
    •Fault Blanking
    •Latch-Off
    		 0.2 MicroDFN/6 $0.90 @ 1k
    MAX4917A  300
    •Auto Retry
    •Fault Blanking
    		 0.3 MicroDFN/6
    SOT-23/5     		$0.90 @ 1k
    MAX4917B  300
    •Fault Blanking
    •Latch-Off
    		 0.3 MicroDFN/6
    SOT-23/5     		$0.90 @ 1k
    See All Current Limit Switches (27)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX4914B, MAX4915A, MAX4915B, MAX4917A, MAX4917B: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
    none

    Design Guides
  		• MUX & SWITCH (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-17 of 17

    MAX4914B Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4914BELT+  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4914BELT+T  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915A Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4915AETT+T  



    		-40°C to +85°C See data sheet
    MAX4915AELT+  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915AELT+T  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915AEUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915AEUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915B Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4915BELT+  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4915BELT+T  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917A Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4917AELT+T  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917AELT+  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917AEUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917AEUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917B Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4917BELT+  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917BELT+T  
    		MicroDFN;6 pin;
    Dwg: 21-0164B (PDF)
    Use pkgcode/variation: L622+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4917BEUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX4917BEUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C See data sheet
    Materials Analysis

    Related Products
    MAX4789, MAX4790, MAX4791, MAX4792, MAX4793, MAX4794 200mA/250mA/300mA Current-Limit Switches

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     Description 
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     Diagram 

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    Document Ref.: 19-0544; Rev 2; 2008-10-02
    This page last modified: 2008-10-03




             


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